Fine-fraction low-grade barite separate beneficiation technology

A fine-grained, barite technology, which is applied in the field of beneficiation technology for graded recovery of barite, can solve the problems of low concentrate grade, high grinding cost, and high cost of chemical dosage

Active Publication Date: 2018-12-07
JIUQUAN IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention solves the problem of high grade of fine-grained low-grade barite full-grain gravity gravity separation tailings, low recovery rate, and low concentrate grade and low recovery rate during fine-grained low-grade barite full-grain flotation. The problem of high grinding cost and high cost of chemical dosage provides a classification and separation process for fine-grained low-grade barite with good separation effect, low cost and less pollution

Method used

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  • Fine-fraction low-grade barite separate beneficiation technology

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Comparison scheme
Effect test

Embodiment 1

[0031] 1# material BaSO 4 content of 17.01%, the material is classified by a standard sieve, and the content of the particle size greater than 0.054mm is 24.07%, BaSO 4 The content is 11.87%; the content of the particle size less than 0.054mm is 75.93%, BaSO 4 The content is 18.64%. Ore samples with particle size greater than 0.054mm are re-selected with a shaker, 1 stage of roughing and 3 stages of concentration, and the concentrate BaSO can be obtained 4 Content 90.53% test index. The flotation process is adopted for the particle size less than 0.054mm, and one stage of roughing and six stages of fine selection are carried out. The dispersant is water glass, and the barite flotation collector is Z-S2. Available flotation concentrate BaSO 4 Content 92.38%, tailings BaSO 4 The test index with a content of 3.40%.

Embodiment 2

[0033] 2# material BaSO 4 content of 13.71%, the material is classified by a standard sieve, and the content of the particle size greater than 0.054mm is 26.51%, BaSO 4 Content 9.60%; less than 0.054mm particle size content is 73.49%, BaSO 4 The content is 15.19%. Ore samples with particle size greater than 0.054mm are subjected to 1-stage roughing and 3-stage beneficiation on a shaking table to obtain concentrated ore BaSO 4 Content 90.33%, BaSO in tailings 4 Content 2.55% re-selection test index. The flotation process is adopted for the particle size less than 0.054mm. One stage of roughing and six stages of fine selection are carried out. The dispersant is water glass, and the barite flotation collector is Z-S2. Available flotation concentrate BaSO 4 Content 93.86%, tailings BaSO4 The test index with a content of 3.20%.

Embodiment 3

[0035] 3# material BaSO 4 content of 11.11%, the material is classified by a standard sieve, and the content of the particle size greater than 0.054mm is 28.42%, BaSO 4 Content 7.81%; less than 0.054mm particle size content is 71.58%, BaSO 4 The content is 12.42%. Ore samples with particle size greater than 0.054mm are subjected to 1-stage roughing and 3-stage beneficiation on a shaking table to obtain concentrated ore BaSO 4 The test index with a content of 89.36%. The flotation process is adopted for the particle size less than 0.054mm, and one stage of roughing and six stages of fine selection are carried out. The dispersant is water glass, and the barite flotation collector is Z-S2. Available flotation concentrate BaSO 4 Content 96.39%, tailings BaSO 4 The test index with a content of 2.89%.

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Abstract

The invention discloses a fine-fraction low-grade barite separate beneficiation technology. The fine-fraction low-grade barite separate beneficiation technology includes the steps that (1) raw ore issubjected to primary screening; (2) fine-fraction sample ore is subjected to flotation, the technological process comprises one time of rougher concentration for discarding tailings and 4-6 times of selection so that flotation concentrate can be obtained, selected middlings return to the upper-level closed-circuit flotation process so that flotation concentrate and flotation tailings can be obtained, and the flotation tailings enter a tailings pond; (3) barite foam obtained through flotation is subjected to reagent removal, filtration and drying, and accordingly fine-fraction barite concentrate fines are obtained; (4) coarse-fraction sample ore is subjected to gravity separation, gravity separation equipment such as a table concentrator and a spiral chute is adopted in the gravity separation technology to conduct one time of roughing and 2-4 times of concentration so that barite concentrate can be obtained, and gravity separation tailings enter the tailings pond; and (5) barite concentrate fines obtained in the two separate beneficiation technologies are combined to obtain an acceptable product. According to the fine-fraction low-grade barite separate beneficiation technology, fine-fraction low-grade barite is subjected to separate beneficiation, the tailings grade is low, the recovery rate is high and ore grinding cost is low.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to a mineral processing process for graded recovery of barite from fine-grained low-grade ore samples. Background technique [0002] The physical and chemical properties of barite are: barite is a sulfate-type non-metallic mineral of barium, and its main component is barium sulfate (BaSO 4 ), the color is divided into white and black barite, insoluble in water, acid, alkali, etc., the specific gravity is between 4.3 and 4.7, the hardness is low between 2.5 and 3.5, the chemical properties are stable, non-toxic, non-magnetic, Strong coverage. Barite does not undergo any chemical reaction in the air or at room temperature. It has good dispersion, good weather resistance, flame retardancy and electrical insulation, and can absorb x-rays and gamma rays. [0003] The use of barite; it is widely used in paint, paper industry, paint industry, rubber industry, plastic industry, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 朱霞丽刘金长秦彩霞秦丽娜张志炜蔺晓亮
Owner JIUQUAN IRON & STEEL GRP
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